I recently got a new video card (ATI Radeon HD 4350). It has VGA & DVI out. VGA works fine in both console and X.

Since my monitor supports HDMI, I decided to try connecting it with a DVI↔HDMI cable, disconnecting the VGA cable to make sure it wouldn’t get involved. When I start up the computer, the console shows up just fine. When I startx, though, I get a solid red screen with an error message: “Out of range.” (The message comes from the monitor, not X.)

Anyone know why this might happen? Do I need to set some X options (I’m running without an xorg.conf)?